Electronic device for sensing biometric information and control method thereof

Abstract

An electronic device for obtaining biometric information is provided. The electronic device includes at least one communication circuit, a first pad including a first electrode and a second electrode, the first electrode being coated with a catalyst associated with first biometric information, a second pad including at least a third electrode, and a processor for controlling the at least one communication circuit, the first pad, and the second pad. The processor is configured to obtain the first biometric information, based at least on an electric current generated by applying a specified voltage between the first electrode and the second electrode and obtain second biometric information, based at least on a voltage difference between the second electrode and the third electrode.

What is claimed is: 
     
       1. An electronic device comprising:
 at least one communication circuit; 
 a first pad including a first electrode and a second electrode, the first electrode being coated with a catalyst associated with first biometric information, the first electrode and the second electrode having a cylindrical shape, and the second electrode being located inside the first electrode; 
 a second pad including at least a third electrode; and 
 a processor configured to control the at least one communication circuit, the first pad, and the second pad, 
 wherein the processor is configured to:
 obtain the first biometric information, based at least on an electric current induced by applying a first specified voltage between the first electrode and the second electrode, 
 obtain second biometric information, based at least on a voltage difference between the second electrode and the third electrode, and 
 obtain third biometric information based on an electric current between the second and third electrodes induced by applying second specified voltage between the second electrode and the third electrode. 
 
 
     
     
       2. The electronic device of  claim 1 , wherein the processor is further configured to obtain the first biometric information by using the first electrode as a working electrode and the second electrode as a reference electrode and a counter electrode. 
     
     
       3. The electronic device of  claim 1 ,
 wherein the first biometric information includes at least one of a lactate concentration or a degree of fatigue, and 
 wherein the catalyst includes a lactate oxidase. 
 
     
     
       4. The electronic device of  claim 1 ,
 wherein the first biometric information includes at least one of a glucose concentration or blood glucose, and 
 wherein the catalyst includes a glucose oxidase. 
 
     
     
       5. The electronic device of  claim 1 , wherein the first pad and the second pad include an electrolyte layer containing an ion-conducting material. 
     
     
       6. The electronic device of  claim 1 ,
 wherein the processor is further configured to obtain the second biometric information or the third biometric information, based on a user input, and 
 wherein the user input is received from an external electronic device via the at least one communication circuit, or is received through a user interface of the electronic device. 
 
     
     
       7. The electronic device of  claim 6 ,
 wherein the second electrode and the third electrode are formed of at least one of a metallic material, a conductive polymer, or a transparent conductive material, 
 wherein the metallic material includes at least one of platinum, gold, silver, silver chloride, copper, or stainless steel, 
 wherein the conductive polymer includes at least one of polyacetylene, polypyrrole, polythiophene, polyphenylene, polyphenyl, or poly(3,4-ethylenedioxythiophene) (PEDOT), and 
 wherein the transparent conductive material includes at least one of indium tin oxide (ITO), aluminum-doped zinc oxide (AZO), tin(II) oxide (SnO), or fluorine-doped tin oxide (FTO). 
 
     
     
       8. The electronic device of  claim 6 , wherein the processor is further configured to transmit at least one of the first biometric information, the second biometric information, or the third biometric information to the external electronic device by using the at least one communication circuit. 
     
     
       9. The electronic device of  claim 8 ,
 wherein the at least one communication circuit is configured to provide communication between the electronic device and the external electronic device via a short-range wireless network, and 
 wherein the short-range wireless network includes at least one of near field communication (NFC), Bluetooth, Bluetooth low energy (BLE), Zigbee, or Z-wave. 
 
     
     
       10. The electronic device of  claim 1 , further comprising:
 a low pass filter (LPF), 
 wherein the LPF is disposed between the second electrode and the third electrode. 
 
     
     
       11. The electronic device of  claim 1 ,
 wherein the processor is further configured to obtain the first biometric information when a specified condition is satisfied, and 
 wherein the specified condition includes skin moisture that is greater than or equal to a specified value. 
 
     
     
       12. The electronic device of  claim 11 , wherein the third biometric information includes the skin moisture. 
     
     
       13. The electronic device of  claim 1 ,
 wherein the second pad further includes a fourth electrode, and 
 wherein the processor is further configured to sense at least one of temperature, humidity, or grip by using the fourth electrode. 
 
     
     
       14. The electronic device of  claim 1 , wherein the first pad and the second pad are detachable. 
     
     
       15. The electronic device of  claim 1 ,
 wherein the processor is further configured to provide notification when the first biometric information satisfies a first condition specified or the second biometric information satisfies a second condition specified, 
 wherein the first condition includes the first biometric information outside a first range specified, and 
 wherein the second condition includes the second biometric information outside a second range specified. 
 
     
     
       16. The electronic device of  claim 15 , wherein the processor is further configured to provide the notification through a display device of the electronic device or by using an external electronic device.